[PATCH] This commit updates the armada-37xx and armada-372x device tree files to add L1 and L2 cache information. This information is provided by the following sources:

[PATCH] This commit updates the armada-37xx and armada-372x device tree files to add L1 and L2 cache information. This information is provided by the following sources:

[Steven]

Description of the Armada 3700 series cache configuration:

https://datasheet.datasheetarchive.com/originals/crawler/marvell.com/18bd41681c6d1d9932>

Description of the ARM Cortex A53 L1 and L2 memory systems:

https://developer.arm.com/documentation/ddi0500/e/level-1-memory-system/about-the-l1-me>
---
 arch/arm64/boot/dts/marvell/armada-372x.dtsi |  9 +++++++++
 arch/arm64/boot/dts/marvell/armada-37xx.dtsi | 19 +++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-372x.dtsi b/arch/arm64/boot/dts/marvell/armada-372x.dtsi
index 5ce55bdbb995..a9c36d997082 100644
--- a/arch/arm64/boot/dts/marvell/armada-372x.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-372x.dtsi
@@ -22,6 +22,15 @@ cpu1: cpu@1 {
 			reg = <0x1>;
 			clocks = <&nb_periph_clk 16>;
 			enable-method = "psci";
+			/* https://datasheet.datasheetarchive.com/originals/crawler/marvell.com/18bd41681c6d1d9932acc66ac0482950.pdf */
+			/* https://developer.arm.com/documentation/ddi0500/e/level-1-memory-system/about-the-l1-memory-system */
+			d-cache-size = <0x8000>;   // 32KB 4-way set-associative data cache
+			d-cache-line-size = <64>;  // Fixed line length of 64 bytes
+			d-cache-sets = <128>;      // 32KiB(size)/64(line-size)=512ways/4-way set
+			i-cache-size = <0x8000>;   // 32kB 2-way set-associative data cache
+			i-cache-line-size = <64>;  // Fixed line length of 64 bytes
+			i-cache-sets = <256>;      // 32KiB(size)/64(line-size)=512ways/2-way set
+			next-level-cache = <&l2>;
 		};
 	};
 };
diff --git a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
index df152c72276b..d1f7b1acd54b 100644
--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
@@ -46,6 +46,25 @@ cpu0: cpu@0 {
 			reg = <0>;
 			clocks = <&nb_periph_clk 16>;
 			enable-method = "psci";
+                        /* https://datasheet.datasheetarchive.com/originals/crawler/marvell.com/18bd41681c6d1d9932> */
+                        /* https://developer.arm.com/documentation/ddi0500/e/level-1-memory-system/about-the-l1-me> */
+                        d-cache-size = <0x8000>;   // 32KB 4-way set-associative data cache
+                        d-cache-line-size = <64>;  // Fixed line length of 64 bytes
+                        d-cache-sets = <128>;      // 32KiB(size)/64(line-size)=512ways/4-way set
+                        i-cache-size = <0x8000>;   // 32kB 2-way set-associative data cache
+                        i-cache-line-size = <64>;  // Fixed line length of 64 bytes
+                        i-cache-sets = <256>;      // 32KiB(size)/64(line-size)=512ways/2-way set
+                        next-level-cache = <&l2>;
+		};
+
+		l2: l2-cache0 {
+                        /* https://datasheet.datasheetarchive.com/originals/crawler/marvell.com/18bd41681c6d1d9932> */
+                        /* https://developer.arm.com/documentation/ddi0500/e/level-1-memory-system/about-the-l1-me> */
+			compatible = "cache";
+			cache-size = <0x40000>; // 256kB
+			cache-line-size = <64>; // Fixed line length of 64 bytes
+			cache-sets = <256>;     // 256kB(size)/64(line-size)=4000ways/16-way set
+			cache-level = <2>;
 		};
 	};
 
-- 
2.35.1


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